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Ford Mondeo: TDCi high-pressure fuel injector copper seal failure

TDCi high-pressure fuel injector copper seal failure is a common fluid leaks fault on the Ford Mondeo on the 2000–2014 cars, and we rate it major. Putting it right costs $800 to $2,200 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 15 documented faults on the Ford Mondeo.

Vehicle
Ford Mondeo
Engine
2.0L
Years
2000–2014
Fuel
diesel
System
Fluid Leaks

This page covers the Ford Mondeo as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Ford Mondeo faults15 documented faults on this model

What you are looking at

A single common-rail diesel fuel injector photographed against a plain background.Example of the part — not this vehicle

A common-rail diesel injector. Contamination damages the nozzle at the tip.

Panoha · CC BY-SA 3.0 · Wikimedia Commons

What goes wrong

The 2.0 TDCi injectors are retained with a clamp and sealed at the cylinder head with copper washers. These washers compress and harden over time, causing combustion gases to leak past the injector. The resulting carbon build-up seizes the injector body to the head, making removal extremely difficult and risking thread damage to the aluminium head. This is a well-documented and progressive failure mode across the Ford TDCi range.

What you would notice

  • Sharp metallic ticking from the cylinder head, worsening under load
  • Diesel or exhaust smell inside the cabin
  • Black sooting or carbon deposits around the injector body at the head surface
  • Rough idle and misfire on the affected cylinder

How to check it

Where to look. Top of the cylinder head, one injector per cylinder

With the engine running, listen for injector ticking and inspect each injector's entry point to the cylinder head for carbon deposits or sooting. An oscilloscope injector test or return-flow measurement will confirm imbalance on a faulty injector.

Parts involved: Fuel injector.

What it costs to put right

$800 to $2,200 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

  • “Has any injector been removed or resealed?”
  • “Any ticking or tapping noise from the top of the engine?”
  • “What injector service history is available?”

Now check the Ford Mondeo you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Ford Mondeo buyer questions

Is tdci high-pressure fuel injector copper seal failure serious on a Ford Mondeo?

We rate it major and common on the Ford Mondeo. The 2.0 TDCi injectors are retained with a clamp and sealed at the cylinder head with copper washers. These washers compress and harden over time, causing combustion gases to leak past the injector. The resulting carbon build-up seizes the injector body to the head, making removal extremely difficult and risking thread damage to the aluminium head. This is a well-documented and progressive failure mode across the Ford TDCi range.

How much does it cost to fix on a Ford Mondeo?

$800 to $2,200 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Ford Mondeo years are affected?

Our research records this fault on the 2000–2014 Ford Mondeo. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

With the engine running, listen for injector ticking and inspect each injector's entry point to the cylinder head for carbon deposits or sooting. An oscilloscope injector test or return-flow measurement will confirm imbalance on a faulty injector. Look here: Top of the cylinder head, one injector per cylinder